The local theory for viscous Hamilton–Jacobi equations in Lebesgue spaces

M Ben-Artzi, P Souplet, FB Weissler - Journal de mathématiques pures et …, 2002 - Elsevier
We consider viscous Hamilton–Jacobi equations of the form [Formula: see text] where a∈ R,
a≠ 0 and p⩾ 1. We provide an extensive investigation of the local Cauchy problem for (VHJ) …

The Cauchy problem for ut= Δu+|∇ u| q

BH Gilding, M Guedda, R Kersner - Journal of Mathematical Analysis and …, 2003 - Elsevier
With qa positive real number, the nonlinear partial differential equation in the title of the
paper arises in the study of the growth of surfaces. In that context it is known as the …

The Cauchy problem for ut= Δu+|∇ u| q, large-time behaviour

BH Gilding - Journal de mathématiques pures et appliquées, 2005 - Elsevier
The nonlinear partial differential equation in the title is typified mathematically as a viscous
Hamilton–Jacobi equation. It arises in the study of the growth of surfaces, and in that context …

Positivity, decay, and extinction for a singular diffusion equation with gradient absorption

RG Iagar, P Laurençot - Journal of Functional Analysis, 2012 - Elsevier
We study qualitative properties of non-negative solutions to the Cauchy problem for the fast
diffusion equation with gradient absorption where N⩾ 1, p∈(1, 2), and q> 0. Based on …

Extinction and non‐extinction for viscous Hamilton–Jacobi equations in N

S Benachour, P Laurençot, D Schmitt… - Asymptotic …, 2002 - content.iospress.com
Extinction in finite time and non-compactness of the support are investigated for non-
negative classical solutions to the Cauchy problem ut−∆ u+|∇ u| p= 0 when p∈(0, 1). The …

Decay estimates for a viscous Hamilton–Jacobi equation with homogeneous Dirichlet boundary conditions

S Benachour, S Dăbuleanu-Hapca… - Asymptotic …, 2007 - content.iospress.com
Global classical solutions to the viscous Hamilton–Jacobi equation ut− Δu= a|∇ u| p in
(0,∞)× Ω with homogeneous Dirichlet boundary conditions are shown to converge to zero in …

Finite time extinction for a diffusion equation with spatially inhomogeneous strong absorption

RG Iagar, P Laurençot - Differential and Integral Equations, 2023 - projecteuclid.org
The phenomenon of finite time extinction of bounded and non-negative solutions to the
diffusion equation with strong absorption\partial_t u-Δ u^ m+| x|^ σ u^ q= 0,\qquad (t, x) ∈ (0 …

Asymptotic behavior for a viscous Hamilton-Jacobi equation with critical exponent

T Gallay, P Laurençot - Indiana University mathematics journal, 2007 - JSTOR
The large time behavior of non-negative solutions to the viscous Hamilton-Jacobi
equation∂ tu–Δu+|▽ u| q= 0 in (0,∞)× ℝN is investigated for the critical exponent q=(N+ …

Second order asymptotics and uniqueness for self-similar profiles to a singular diffusion equation with gradient absorption

RG Iagar, P Laurençot - arXiv preprint arXiv:2406.11518, 2024 - arxiv.org
Solutions in self-similar form presenting finite time extinction to the singular diffusion
equation with gradient absorption $$\partial_t u-\mathrm {div}(|\nabla u|^{p-2}\nabla …

Eternal solutions to a singular diffusion equation with critical gradient absorption

RG Iagar, P Laurençot - Nonlinearity, 2013 - iopscience.iop.org
Eternal solutions to a singular diffusion equation with critical gradient absorption Page 1
Nonlinearity PAPER Eternal solutions to a singular diffusion equation with critical gradient …